FWIW, I've had the experience of a Presence manifesting itself to talk to me. The most likely explanation of that experience is a brain glitch. I'm not sure why I ought to consider that a "backup" explanation.
Right, obviously it's a problem. There are lots of people who think they've been manifested to, and some of them are schizophrenic, and some of them are not, and it's a whole lot easier to just assume they're all deluded (even if not lying). But even Richard Dawkins has admitted that he could believe in God if he had no other choice. (I have a source if you want.)
Certainly, if you're completely determined not to believe no matter what—if you would refuse God even if He appeared to you himself—then you never will. But if there is absolutely nothing that wou... (read more)
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.